The Collaborative International Dictionary
Metacromion
Metacromion \Met`a*cro"mi*on\, n. [NL.] (Anat.) A process projecting backward and downward from the acromion of the scapula of some mammals.
Wiktionary
metacromion
n. (context anatomy English) A process projecting backward and downward from the acromion of the scapula of some mammals.